BenQ XL2411T Product Service Manual Download Page 3 | Manualshive

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Abbreviations & Acronyms

1 About This Manual

This manual contains information about maintenance and service of BenQ products. Use this
manual to perform diagnostics tests, troubleshoot problems, and align the BenQ product.

1.1. Trademark

The following terms are trademarks of BenQ Corporation:

BenQ

Importance

Only trained service personnel who are familiar with this BenQ Product shall perform
service or maintenance to it. Before performing any maintenance or service, the
engineer MUST read the “Safety Note”.

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Summary of Contents for XL2411T

Page 1: ...e 2012 09 06 Notice For RO to input specific Legal Requirement in specific NS regarding to responsibility and liability statements Please check BenQ s eSupport web site http esupport benq com to ensure that you have the most recent version of this manual First Edition Sep 2012 Copyright BenQ Corporation 2012 All Right Reserved ...

Page 2: ... 2 Customer Acceptance 20 4 Level 1 Cosmetic Appearance Alignment Service 27 4 1 Software Firmware Upgrade Process 27 4 2 Alignment procedure for function adjustment 37 5 Level 2 Disassembly Assembly Circuit Board and Standard Parts Replacement 40 5 1 Exploded View 40 5 2 Disassembly Assembly 41 5 3 Packing 44 5 4 Block diagram 45 5 5 Trouble Shooting Guide 46 5 6 Circuit Operation Theory 49 Appen...

Page 3: ...rm diagnostics tests troubleshoot problems and align the BenQ product 1 1 Trademark The following terms are trademarks of BenQ Corporation BenQ Importance Only trained service personnel who are familiar with this BenQ Product shall perform service or maintenance to it Before performing any maintenance or service the engineer MUST read the Safety Note ...

Page 4: ...persons are safe while you are servicing the product DO NOT perform any action that may cause a hazard to the customer or make the product unsafe 3 Use proper safety devices to ensure your personal safety 4 Always use approved tools and test equipment for servicing 5 Never assume the product s power is disconnected from the mains power supply Check that it is disconnected before opening the produc...

Page 5: ... V8 TN Screen diagonal 24 531 36 H x298 89 V Display Format 1920 H x 1080 V Panel Display information Pixel Pitch 0 27675 mm x 0 27675 mm per one triad Viewing Angle Contrast Ratio 10 R L 170 degrees typ U D 160 degrees typ Analog interface with Scaling supported Yes With 15 pin D sub connector DVI interface with Scaling supported Yes DVI D Dual Link DP interface with Scaling supported NO Display ...

Page 6: ...es DDC2B DDC CI support version 1 1 or later Yes DDC CI Audio speakers supported No Audio Jack input connector supported NO Earphone Jack input connector supported Yes For HDMI port Microphone function supported No Mechanical Tilt base design Yes From 5 to 20 degree VESA wall mounting design Yes Mechanical Rotate design No Mechanical Lift base design No Kensington compatible lock design Yes 3 1 2 ...

Page 7: ...ce Item Condition Spec OK N A Remark Signal Cable 15 pin D Sub Color Black Length 1800 30 mm 24 pin DVI D Dual Link Color White Length 1800 50 mm Dual Link Cable Pin assignment 15 pin D sub connector See Note 1 For 15 pin D sub 24 pin DVI D connector See Note 2 For 24 pin DVI D Dual Link 19 pin HDMI connector See Note 3 For 19 pin HDMI Video input Signal type Separate analog R G B For 15 pin D sub...

Page 8: ...nd 14 V sync 7 Green Ground 15 SCL 8 Blue Ground Note 2 The pin assignment of 24 pin DVI D connector is as below Pin Signal Assignment Pin Signal Assignment 1 TMDS RX2 13 TMDS RX3 2 TMDS RX2 14 5V Power 3 TMDS Ground 15 GROUND 4 TMDS RX4 16 Hot Plug Detect 5 TMDS RX4 17 TMDS RX0 6 DDC CLOCK 18 TMDS RX0 7 DDC DATA 19 TMDS Ground 8 Floating 20 TMDS RX5 9 TMDS RX1 21 TMDS RX5 10 TMDS RX1 22 TMDS Grou...

Page 9: ...0 Rise time Fall time 5 ms Typ 1920 x 1080 60Hz max support timing Settling Time after overshoot undershoot 5 final full scale value Refer to VESA VSIS Standard V1R1 Overshoot Undershoot 12 of step function voltage level over the full voltage range Refer to VESA VSIS Standard V1R1 3 1 2 4 Scan range Item Condition Spec OK N A Remark Horizontal H Freq VGA HDMI 15K 135K H Freq DVI 30K 140K Vertical ...

Page 10: ...00 60 24 74 93 P 1024x768 78 75 60 02 75 03 P 1152x720 66 75 44 86 60 P 1152x864 108 00 67 50 75 00 P 1152x870 100 00 68 68 75 06 P 1152x900 92 94 61 80 65 95 P 1280x720 74 25 45 00 59 94 P 1280x720 74 50 44 77 59 86 P 1280x720 95 75 56 46 74 78 P 1280x768 R 68 25 47 40 60 00 P 1280x800 83 50 49 702 59 81 P 1280x800 106 6 62 795 74 934 P 1280x960 108 00 60 00 60 00 P 1280x1024 108 00 63 98 60 02 P...

Page 11: ... Test Equipment Westar TRD 100 or equal level equipment Viewing angle At Contrast ratio 10 R L 170 degrees typ At Contrast ratio 10 U D 160 degrees typ CIE coordinate of White 1 Bluish mode x y 0 283 0 297 0 02 0 02 2 Reddish mode x y 0 326 0 342 0 02 0 02 3 6500K mode x y 0 313 0 329 0 02 0 02 4 sRGB x y 0 313 0 329 0 015 0 015 Display colors 16 7 Millions colors RGB 6 bit Hi_FRC Color temperatur...

Page 12: ...densing Altitude Operating 0 3048m 10 000ft Without packing Non operating 0 12 192m 40 000ft With packing 3 1 3 5 Transportation Item Condition Spec OK N A Remark 1 Vibration Package Non Operating 1 Acceleration 1 15G 1 The product should be packaged and non operating 2 The duration of endurance is 30 minutes per axis X Y and Z 3 Procedure Confirmed sample with appearance and function ready before...

Page 13: ...V m Magnetic Band 1 200nT Band 2 25nT EMI FCC part 15J class B After Mass production under 1dBuv for constant measure Besides DNSF and VCCI class 2 are optional EN55022 class B 3 1 3 8 Reliability Item Condition Spec OK N A Remark MTBF Prediction Refer to Telcordia Bellcore 60 000 Hours Excluding backlight Backlight Life time At 25 2 30 000 Hours min See Note A Note A Backlight life time is define...

Page 14: ...tics of LCD panel Item Unit Conditions Min Typ Max Remark Viewing Angle degree degree Horizontal Right CR 10 Left 150 170 degree degree Vertical Up CR 10 Down 140 160 Contrast ratio Normal Direction 600 1000 Response Time msec Rising Time 3 5 7 4 msec Falling Time 1 5 2 6 msec Rising Falling 5 10 Color Chromaticity Coordinates CIE Red x Typ 0 03 0 65 Typ 0 03 Red y Typ 0 03 0 329 Typ 0 03 Green x ...

Page 15: ...ardware control definition Item Condition Spec OK N A Remark Power button Enter button Right Inc button Left Dec button Menu button Mode button Input Select button iKey button Mute button 3 1 5 2 OSD control function definition Item Condition Spec OK N A Remark Auto Adjust Auto Geometry Brightness Contrast Horizontal Position Vertical Position Pixel Clock Phase Color Bluish Reddish Normal sRGB Sen...

Page 16: ...ey Hot key for Volume Selection by Custom key Hot key for Input Select Selection by Custom key Hot key for Mode Selection by Custom key 3 1 6 Mechanical Characteristics 3 1 6 1 Dimension Item Condition Spec OK N A Remark Bezel opening 533 2 300 7 Monitor without Stand W x H x D mm 570 347 63 Monitor with Stand W x H x D mm 570 431 222 6 Carton Box outside L x W x H mm 652 420 251 Tilt and Swivel r...

Page 17: ... quantity WW 20 360 40 810 JP 20 320 40 720 EU 20 270 40 567 3 1 7 Pallet Shipment 3 1 7 1 Container Specification Stowing Type Container Quantity of products sets Every container Quantity of Products sets Every Pallet Quantity of pallet sets Every Container With pallet 20 380 WW 344 JP 270 EU Pallet A 36 Pallet B 54 Pallet A 32 Pallet B 48 Pallet A 27 Pallet A 4 Pallet B 4 Pallet A 4 Pallet B 4 P...

Page 18: ...Carton Specification Product Net Weight Kg Gross Weight Kg Dimension w o Base W H D mm 6 0Kg 8 5Kg 570 348 4 63 Package Carton Interior Dimension mm L W H Carton External Dimension mm L W H 640 408 231 652 420 251 ...

Page 19: ... 19 3 1 8 Certification ...

Page 20: ...ted at manufacturer s site 3 2 4 DEFINITION The Customer Acceptance Criteria is the document defining the process of examining testing or otherwise comparing the product with a given set of specified technical esthetic and workmanship requirements leading to an evaluation of the degree of fitness for use including possible personal injury or property damage for the user of the product 3 2 5 CLASSI...

Page 21: ...ctive contains one or more critical and may also contain major and or minor defects Major defective A major defective contains one or more defects and may also contain minor defects but contains no critical defect Minor defective A minor defective contains one or more minor defects but contains no critical and major defects 3 2 7 EXPRESSION OF DEFECTIVES Number of defects Percent of defects X 100 ...

Page 22: ...ries packed with the product as connecting cables plugs adapters and the like and being inspected as a part of the complete product must be included in the evaluation The evaluation must be within the limits of the product specification and for not specified characteristics be related to the design model limit samples or judgment of a jury of experts Faults must be demonstrable 3 2 10 TEST CONDITI...

Page 23: ...Major 3 Appearance of product 3 1 Incorrect color of cabinet Major 3 2 Incorrect color of tilt swivel base Major 3 3 Wrong logo or name plate Major 3 4 Poor print of logo or name plate Major 3 5 Label on product Wrong or missing Major 3 6 Scratched or dirty but legible spec label Minor 3 7 GAP between LCD and front bezel is over 2 0 mm Major 3 8 Dot area discolor over 1mm dia in front or over 2mm ...

Page 24: ...ut safe Major 4 3 Signal cable contact pin dirty Minor 4 4 Signal cable plug dirty or surface damaged but safe Minor 4 5 Cable crack Major 4 6 Cable scratch wire not exposed or dirty Major 4 7 AC DC adapter no function Minor 4 8 Signal cable contact pin dirty Major 5 Interior of the product 5 1 Use Non QVL Qualify vendor list component Major 5 2 Wrong parts broken component but safe Major 5 3 Fore...

Page 25: ...st pattern KEY PATTERN TEST ITEM A FULL WHITE H Size V Size Viewing Angle Light Output Impurity Spot check Contrast Ratio Brightness adjust Range E DARK Background Spot check F FULL W R G B Impurity Spot check CIE Coordinate check G 256 COLORS Color Check H 16 GREY Gray Check H Black White stripe pattern Electric characteristics ...

Page 26: ... Model Name XL2411T Bright Dot Single 3 Dots Dark Dot Single 5 Dots Density Bright Dot Distance between two Bright Dots 15mm Dark Dot Distance between two Dark Dots 15mm Bright to Dark Dot Distance between Bright and Dark Dot 15mm Total Dots Bright and Dark Dot 5Dots ...

Page 27: ...ement Step 1 Prepare PC with 2K or XP system printer port cable x1 and D sub cable x1 Step 2 Prepare ISP board and setup jumper as below Pin 1 2 of J5 J6 J7 J8 are for Firmware Upgrading Please Setup the Jumper as below photo shows Short pin1 and pin2 at J5 J6 J7 J8 Jump Setting for J7 J8 Jump Setting for J5 J6 ...

Page 28: ...d Then connect signal cable between ISP board position 1 and monitor 2 Power on the monitor Connection a Connect the Printer Cable to the Printer Connector b Connect the other side to the Board c Connect the signal cable to Board between ISP board position 1 and monitor ...

Page 29: ... 29 4 1 2 Firmware Upgrade Prepare for XL2411T Step1 Run Program MStarISPToolv4 3 4 exe refer to below Picture Step2 Program Setting Click the button Auto to set the ISP tool as bellow ...

Page 30: ... 30 Step3 Click the button Read to open the firmware that will be ISP Step4 Click the button Connect one cue Device Type is xxxx will show as bellow If not check connects again ...

Page 31: ... 31 Step5 Click the button Run to continue the programming If the ISP process is successful it will show Pass Step6 AC off on and turn on Factory Menu and check F W version ...

Page 32: ...rt95nt and install into your computer Step 2 Un zip QEDIDV016 rar 4 1 3 2 Hardware configuration Step 1 Prepare following items a PC with 2K or XP system 1 b printer port cable 1 c D Sub cable 2 Step 2 Prepare ISP board and setup jumper as below Short pin1 and pin2 at J5 J6 J7 J8 ...

Page 33: ... 33 Step 3 Connect printer port cable between ISP board and PC LPT1 Connect one D Sub cable between ISP board position 1 and monitor Connect another D Sub cable between ISP board and PC ...

Page 34: ... 34 4 1 3 3 EDID Upgrade Procedure Step 1 Run the program Q EDID V016 exe when the UI popped up Note If VGA choose 128bytes and HDMI choose 256bytes ...

Page 35: ... 35 Step 2 Click Open File and select VGA or HDMI EDID file Step 3 If load file is successful it shows Open EDID Table OK And then Click Write EDID button to update EDID ...

Page 36: ... 36 Step 4 If write EDID is successful it shows Write EDID OK And then click Read EDID button to check if successful or not Step 5 If read EDID is successful it shows Read EDID OK ...

Page 37: ... button to do auto color D Color adjustment 1 Setup input timing ICL 605 white pattern 2 Confirm auto color adjustment had already done 3 Measure color temperature by Minolta CA 110 or equivalent equipment 4 Check the color temperature Bluish Reddish Normal The color temperature specification as follows Color mode Color temperature x Y Normal 6500k 0 313 0 020 0 329 0 020 Min 250m2 Bluish 9300k 0 ...

Page 38: ... Assembly note Connect the IF BD with power BD Put power BD and I F BD into shielding and fix the screw Assembly LVDS cable with panel Assembly the Ctrl board set Add skew on D sub DVI and HDMI Connect the backlight wire ...

Page 39: ...9 Add gasket on connector of Ear Jack board and gasket must close to panel Add AL tape on shielding total 3 pcs and assemble control board then fix it Connect earphone wire to IF BD Assembly RC with stand ...

Page 40: ... 40 5 Level 2 Disassembly Assembly Circuit Board and Standard Parts Replacement 5 1 Exploded View ...

Page 41: ... as bellow 1 Press fixture 2 Working table 3 Screw driver 4 Knife 1 5 Glove 6 Cleaning cloth 7 ESD protection ite m picture Operation Tool Notes 1 Disassemble the stand 4 screws Take off the stand Screw driver 2 Disassembly the BZL from the monitor notice the disassembly order 1 Left 1 parts of BZL 2 Top 2 parts of bezel 3 Bottom 3 parts of BZL 4 Right 4 parts of BZL Don t draw the BZL When disass...

Page 42: ... 42 4 Tear down Al foils 5 Take out the light wires from the panel 6 Disassemble the C B 7 Disassembled the SHD shielding 2 4 screw and HDMI screw the monitor with DVI have four Screw driver ...

Page 43: ...ll Al foils 9 Disassembled the AC soc shielding 10 Unlock the LVDS wire and panel wire 11 Disassembled the PCBA shielding 9 screws Screw driver 12 Disassemble the PCBA from Main SHD and disassemble the wire from I F BD ...

Page 44: ... 44 5 3 Packing ...

Page 45: ...r a smart power management and power saving function It also offers OSD menu for users to control the adjustable items and get some information about this monitor The best function is to offer users an easy method to do DDC CI Enable and Auto Adjustment items well done just by pressing hot key we called it DDC CI and Auto which can manual controlled items XL2411T also offer DDC2 CI function to mee...

Page 46: ... 46 5 5 Trouble Shooting Guide 5 6 1 No Display or display is unstable on analog or digital port 5 6 1 1 Interface Board ...

Page 47: ... 47 5 1 1 BUTTON Function 5 5 2 OSD Function ...

Page 48: ...lace IC601 Check IC801 OK Replace D851 L851 Replace IC851 Check I F BD Check D851 L851 OK Replace panel Check D705 OK Backlight did not shine Replace D703 Replace D705 D703 D704 5 0V OK LED 20V OK Check D703 OK OK Check CN701 PIN1 BL ON is HI Check CN701 PIN2 is HI BRT ADJ existed ...

Page 49: ...ng is for detect change mode RSDS transmitter is used to compress the digital RGB data the Hsync Vsync and pixel clock generated by Scaling then output to LCD module Flash ROM stores source code and MCU embedded in Scalar offers H W DDC2Bi function controls system processing EEPROM is stored DDC data OSD common data and user mode data b IC introduction 1 DDC Display Data Channel function We use DD...

Page 50: ... to enter OSD main menu 3 ENTER key to enter sub menus or select items 4 EXIT key Exit OSD 5 UP Plus key to select previous and to increase adjustment 6 Down Minus key to select next and to decrease adjustment 7 LED It indicates the DPMS status of this LCD monitor white light means DPMS on Normal operating condition Amber light means DPMS off Power Saving A 3 LED Driver Circuit Operation Theory An...

Page 51: ... 51 Appendix 1 Screw List Torque STANDARD SCREW TORQUE SPEC ...

Page 52: ... 52 ...

Page 53: ... 53 ...

Page 54: ... 54 Appendix 2 Physical Dimension Front View and Side view Fig 1 Physical Dimension Front View and Side view ...

Page 55: ... 55 Fig 2 Appearance Description ...

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